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Ortho Part B > Class 3 > Flashcards

Class 3 Flashcards

1
Q

Crowding problems are often associated with

A

Class I problems

Most people are class i

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2
Q

Over time both areches

A

Tend to get more crowding

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3
Q

Hispanics

A

Have more crowding

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4
Q

Classification of crowding based on

A

Facial form
Appropriate radiographs
Space analaysis

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5
Q

Very protrusive patients

A

Increased arch will make them more protrusive

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6
Q

When can you protrude teeth

A

When lips are incompetent in regards to maxillary and chin

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7
Q

Excess space usually no treatment unless

A

esthetics/trauma
Eruption problems
Pathology

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8
Q

Looped arched wire

A

Rectangular wire

2 point contact

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9
Q

Labial bow wire

A

One point contact

Round wire

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10
Q

2 appliances for incisor retraction

A

Looped arch wire

Labial bow

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11
Q

Finger spring to close diastema

A

Tipping

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12
Q

Closing diastema with arch wire

A

Bodily movement

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13
Q

Space management no tax

A

The consequences are ultimate crowding with a class I molar relationship

OR

Required expansion treatment with Class I molar relationships

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14
Q

Disking

A

Using with minor irrgeulatiry
Make true vertical reduionts
Possible sites are mesial and distal surface of primary canines and molars
Consider f varnish
Do NOT disk percent teeth in mixed dentin

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15
Q

Holding arches

A

Construct with ideal arch form
Soldered arches most reliable
Faciolingula discrpeneices resolve best
Some limitations as a tooth mover

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16
Q

LLHA controls

A

Arch form and coordination

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17
Q

Some biomechanics may require

A

adjustments of LLHA

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18
Q

LLHA can be used as

A

A retainer

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19
Q

LLHA can control

A

arch length and move teeth

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20
Q

band and loop

A

Difficult to place on primary molar

Can be distorted

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21
Q

Distal shoe

A

Only when there is a missing primary secondary molar prior to eruption of permanent 1st molar

60-66% successful

1 mm below margin ridge

Unilateral/bi

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22
Q

LLHA

A

Fixed removable not very stable very fragile

Keyhole shaped states always from premolars

23
Q

TPA

A

Maxillary transpalatal arch can be used when one side of the arch is broken but the other is not

24
Q

MxLHA

A

Not common can be used as long as not too much overbite

25
Q

Nance

A

Anchorage off palatal portion

26
Q

Lingual arch problems

A

Put it in before lower incisors erupted and can get caught

27
Q

Moderate gernelzied space desicrepency < 4mm per arch

A

True shortage of space including leeway
Tooth movement methods will create the space
Prognosis and ability are unknown

28
Q

Arch exapanison (not palatal )

A

expand arch circumference and create and create 4 mm space

29
Q

Arch expansion based on

A

Lip and incisors a-p position: WNL or retruisve
Facial keratinized tissue: adequate
OVerbite: will allow facial incisor movement
Overjet: will allow facial incisor movemnt

30
Q

Arch expansion consider if

A 
Skeletal class I
Dental class I or E to E
Dental all teeth present clinically or radiographically
31
Q

Active lingual arch consider if

A 
Lower anterior crowding 
best for faciolingula descirpeancies
Facial tipping of incisors
NOT good for rotations
May increase the possibility of second molar impaction
Stability unknown
32
Q

Lip Bumpers

A

Lower antior and or buccal segment crowing
Best for faciolingual discrepancies
Facial tipping of incisors/migration
NOT good for rotation
Principles of equilibrium theory apply
May increase the possibility of second molar impaction
Stability unknown

33
Q

JBanded bonded fixed appliances

A

Lower anterior and or buccal segment crowding
Tipping and bodily movements are possible
ROTATIONCS CAN BE TREATED
Stability unknown

34
Q

Headgear

A

Mxiallry arch only
Buccal segment crowding
Molar movement control
Require cooperation

35
Q

Severe generalized space discrepancy >4-5 mm per arch

A

Extraction based on crowding and protrusion

14mm opens up

36
Q

Serial extractions >10 mm per arch

A 
Indications:
Class I
Good facial form
Sever space shortage
Early loss of primary canines
Gingival defects
Impaction
37
Q

Serial extraction advantage

A 
spontaneous incisor alignment
Improved gingiva
IMproved hygiene
Improved psych
Better canine position
Reduced treatment time
Reduced retention time
Better stability
38
Q

Serial extraction disadvantages

A 
Incisor lingual tipping
Deep bite 
Reduced vertical growth and alveolar development
Poor facial esthetics
Requires future treatment
Remainein teeth may not erupt
Tongue habntis develop
39
Q

Serial extraction usual sequence

A

Primary canine
Primary first molar
First premolar

40
Q

Serial extraction principle

A

Extraction of primary teeth to facilitate alignment of the erupted permanent teeth and encourage eruption of the premolars that will be extracted

41
Q

Moderalete localized space dsicrepeancy < 3mm per quadrant

A

Space regainging

42
Q

Space regaining

A

Multiple causes
Adhere to maximum space loss amounts
Use reliable appliances

43
Q

Space regaining permanent molar ectopic eruotpjin

A

Maxillary arch
Painless
Often self correct

If primary molar is lost space loss can be dramatic and beyond the mnoderate localized discrepancy

44
Q

Space regaining when there is not successor

A

When the succednanous premolar is missing careful planning and good timin can lead to beneficial substitution

45
Q

Band and spring

A

Helps tip molars back to allow eruption

46
Q

Bonded spring

A

On first and second molars

47
Q

Band and spring biomechanics

A

Single for not throug Cres

Uncontrolled distal crown tip

48
Q

Hawley with finger spring biomechanics

A

Single force not through Cres

Uncontrolled distal tip

49
Q

Nance can be used for space regaining

A

Tipping and bodily movement

50
Q

OPen coil spring

A

Reciprocal force
Applicable buccal to Cres
Produces rotation of teeth

Forces on molar
Distal force and moment production rotation

51
Q

LLHA can also be used

A

For space regaining

52
Q

Referral

A

Palatal anchorage appliances
Headgear
Extraction

53
Q

Distalizing appliance

A

Distal Face on palatal side at level near Cres but still not in 3D through Cres

Moves teeth 1 mm per month

Moves anterior

54
Q

Mini screw supported dsitalziing appliance

A

Won’t move anterior teeth

No acrylic reduce tissue irritation reduced compliance no loss of anterior anchorage

Ortho Part B (4 decks)

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